c = .5;
T1 = 1 * 1e-3;
Ta = 1 * 1e-6;
a = .4; % s^-1
Te = exp(-Ta/T1);

Tbegin = 10e-3;
Tend = Tbegin + 5e-3;
ur = 1;
ujump = 1000 - ur;

Acpu = Te;
Bcpu = (1 - Te)*c;
Ccpu = 1;
Dcpu = 0;